20513556

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{401}}^1$

素因数の和:454

約数の個数: 108

約数和(自身を含む): 62555220

約数和(自身を除く): 42041664

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 29, 36, 42, 49, 58, 63, 84, 87, 98, 116, 126, 147, 174, 196, 203, 252, 261, 294, 348, 401, 406, 441, 522, 588, 609, 802, 812, 882, 1044, 1203, 1218, 1421, 1604, 1764, 1827, 2406, 2436, 2807, 2842, 3609, 3654, 4263, 4812, 5614, 5684, 7218, 7308, 8421, 8526, 11228, 11629, 12789, 14436, 16842, 17052, 19649, 23258, 25263, 25578, 33684, 34887, 39298, 46516, 50526, 51156, 58947, 69774, 78596, 81403, 101052, 104661, 117894, 139548, 162806, 176841, 209322, 235788, 244209, 325612, 353682, 418644, 488418, 569821, 707364, 732627, 976836, 1139642, 1465254, 1709463, 2279284, 2930508, 3418926, 5128389, 6837852, 10256778, 20513556]

約数ペア:

[(1, 20513556), (2, 10256778), (3, 6837852), (4, 5128389), (6, 3418926), (7, 2930508), (9, 2279284), (12, 1709463), (14, 1465254), (18, 1139642), (21, 976836), (28, 732627), (29, 707364), (36, 569821), (42, 488418), (49, 418644), (58, 353682), (63, 325612), (84, 244209), (87, 235788), (98, 209322), (116, 176841), (126, 162806), (147, 139548), (174, 117894), (196, 104661), (203, 101052), (252, 81403), (261, 78596), (294, 69774), (348, 58947), (401, 51156), (406, 50526), (441, 46516), (522, 39298), (588, 34887), (609, 33684), (802, 25578), (812, 25263), (882, 23258), (1044, 19649), (1203, 17052), (1218, 16842), (1421, 14436), (1604, 12789), (1764, 11629), (1827, 11228), (2406, 8526), (2436, 8421), (2807, 7308), (2842, 7218), (3609, 5684), (3654, 5614), (4263, 4812)]